PDF malware analysis — malicious · a22513ba04771c4f

MALICIOUS

PDF

2.4 KB

MD5: 23e7e30b404b67cb52a52db9440e02a8 SHA-1: b3cfb8f4139a273dd2c95f4559b052a88d6849b3 SHA-256: a22513ba04771c4fdab3234ef60e6853ad8a0ea5e00649e92b0edab2697c59cd

60 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: User Execution: Malicious Attachment T1059.001 Command and Scripting Interpreter: PowerShell

The PDF file contains an embedded script payload, as indicated by the PDF_EMBEDDED_SCRIPT_PAYLOAD heuristic and the ML_NYX_PDF_MALICIOUS classifier. The presence of XFA form elements further suggests a complex structure often used for exploitation. The embedded script is likely responsible for executing malicious actions, potentially downloading further payloads or exploiting known vulnerabilities within PDF viewers. The confidence is high due to the ML classifier and specific PDF heuristics.

Machine Learning

Nyx PDF Classifier malicious score 0.9902

Heuristics 3

Embedded script payload in PDF stream medium PDF_EMBEDDED_SCRIPT_PAYLOAD

PDF stream bytes contain an HTML/XFA <script> tag without accompanying Windows shell-execution primitives — common in accessible XFA forms but worth surfacing for analyst review.
XFA form low PDF_XFA

PDF uses XML Forms Architecture — can contain script logic
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
URL http://ns.adobe.com/xdp/
- http://www.xfa.org/schema/xfa-template/2.5

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`embedded_pdf_script_000003e0.bin` `9bc33ab3f898dfcd4394bc4a247c1030fd5f53bed59a80fee0dba0a492351009`	pdf-embedded-script	PDF decompressed stream script payload at offset 0x3E0	2463 bytes

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